213682517 has 2 divisors, whose sum is σ = 213682518. Its totient is φ = 213682516.

The previous prime is 213682499. The next prime is 213682541. The reversal of 213682517 is 715286312.

It is a happy number.

213682517 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 148815601 + 64866916 = 12199^2 + 8054^2 .

It is a cyclic number.

It is not a de Polignac number, because 213682517 - 2¹⁴ = 213666133 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213682577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106841258 + 106841259.

It is an arithmetic number, because the mean of its divisors is an integer number (106841259).

Almost surely, 2^213682517 is an apocalyptic number.

It is an amenable number.

213682517 is a deficient number, since it is larger than the sum of its proper divisors (1).

213682517 is an equidigital number, since it uses as much as digits as its factorization.

213682517 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20160, while the sum is 35.

The square root of 213682517 is about 14617.8834651259. The cubic root of 213682517 is about 597.8464621127.

The spelling of 213682517 in words is "two hundred thirteen million, six hundred eighty-two thousand, five hundred seventeen".